James Anthony O'Neill
CIK 1786291 · SVP, Senior Advisor · last filed 2025-08-27
James Anthony O'Neill is a SVP, Senior Advisor who has filed 30 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing, for ENTG, was dated Sep 18, 2025. Across all open-market trades the lifetime net is −$3.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.2M across reported positions. 31 SEC filings were submitted jointly with ENTEGRIS INC.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
ENTG price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
BILLERICA, MA 01821
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ENTG | SVP, Senior Advisor | 15,704 | $138.74 | $2.18M | -$3.12M | 26 | 2025-08-27 |
Recent Filings
30 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-09-18 | ENTG | Notice (144) | −4,547 | -$435.6K | EDGAR |
| 2025-08-27 | ENTG | — | — | $0 | EDGAR |
| 2025-04-08 | ENTG | Tax (F) | −188 | -$12.3K | EDGAR |
| 2025-04-03 | ENTG | Grant (A) | +4,060 | $0 | EDGAR |
| 2025-02-24 | ENTG | Tax (F) | −619 | -$66.8K | EDGAR |
| 2025-02-21 | ENTG | Mixed | +716 | -$32.2K | EDGAR |
| 2024-06-04 | ENTG | Gift (G) | −1,894 | $0 | EDGAR |
| 2024-05-28 | ENTG | Mixed | −3,142 | -$656.7K | EDGAR |
| 2024-05-23 | ENTG | Notice (144) | −6,761 | -$902.6K | EDGAR |
| 2024-04-03 | ENTG | Grant (A) | +2,784 | $0 | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.